Electromagnetic recording device.



A. P. SANBORN & R. C. WILSON.

ELECTROMAGNETIC RECORDING DEVICE.

APPLICATION FILED APR. 22. |915.

mr Nann's psu-us cu.. man: umn.. wnsmwa mn, n.

UNITED STATES PATENT OFFICE.

ARTHUR P. -SANBORN AND ROY C. WILSON, OF OSSINING, NEW YORK, ASSIGNORS OF ONE-THIRD TO HORACE R. HORTON, OF HAYMOUNT, NEW YORK.

ELECTROMAGNETIC RECORDING DEVICE.

Specification of Letters Patent.

Patented Sept. 19, 1916.

Original application filed .Tune 22, 1914, Serial No. 846,585. Divided and this application led April 22,

- To alli/17mm t may concern Be it known that we, ARTHUR P. SAN- noicN and ROY Ci. WYILsoN, citizens of the United States, residing at Ossining, in the county of Vestchester' and State of New York, have invented certain new and useful Improvements in Electromagnetic Recording Devices; and we do declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates generically to recording appliances but more especially to such of the latter as are electro-magnetically controlled.

This invention is especially applicable to systems of ytrain controlling mechanisms wherein it is desirable to record the time at which the train passed a certain point or the engineer a predetermined signal.

One'o-bject of the invention is to provide a continuously rotating chronometer chart having in connection therewith means for automatically perforating the same.

Another and further object is the provision of a continuously rotating chronometer chart having a marking device normally bearing upon the surface thereof and means automatically controlled for simultaneously perforating said chart and removing the marking device therefrom.

Tith these and other objects in view, our invention consists of certain novel details of construction, and the combination and arrangement of parts to be more particularly hereinafter set forth and claimed.

In the'accompanying drawings in which corresponding` parts are indicated by similar reference characters, Figure 1 isa central longitudinal section of our improved recording device, showing diagrammatic connection therewith, andthe energizing circuit for the solenoid together with the means for closing said circuit; Fig. 2 is a transverse vertical section taken on the line 2.-2 of Fig. l. i

Briefly stated, our invention which is a division'ofapplicatiom Serial No. 846,585., filed June 22 1914, and terminating in Patent No. 1,182,798, granted May 9, 1916, consists of a chronometer chart rotating immediately in front ofv a perforating device, which latter is actuated by means of a plun- Serial No. 23,205.

ger reciprocatively mounted in the core of a solenoid so that when the same is energized the plunger will cause the perforating device to pierce the chart. Moreover, as an additional recording means to determine the length of time the plunger remains actuated, a marking device which normally bears upon the outer surface of the chart, is removed therefrom when the chart is perforated.

Referring more particularly to the drawings, our invention in its present illustrated embodiment consists of a casing 1 which may be located within the engine cab or at any other suitable point on a train. The casing 1 is provided with a door 2 so as to give access, for obvious reasons.

Properly supported within the casing 1 is another casing 3 having a downwardly swinging door 4, the latter, however, being normally locked by suitable fastening elements to prevent tampering with the contents of the casing. A spring motor 5 is mounted within the casing 3 and through a chain of meshing pinionsG, rotates a revolubly mounted shaft 7, the latter being disposed about central of the casing. Upon the shaft 7 is a metallic disk 8 held in position by a stop 9 against which it bears.

A clock chart 10 is disposed upon the shaft 7 contiguous to the disk 8, said chart having thereon twenty-four divisions which correspondto the twenty-four hours of the day, and these twenty-four divisions are further divided into half hours, quarters, etc., as will be readily understood.

Upon the inner surface of the door 4 of the casing 8 there is secured a resilient strip 11, the latter carrying adjacent its upper end a holder 12 adapted to receive a pencil or other suitable marking device. This resilient strip 11 is so disposed with respect to the face of the chart 10 that marker 12 normally bears thereon. In the back of the casing 3 there is formed an opening 13 the purpose ofwhich will appear later. Surrounding the opening 13 and projecting inwardly therefrom to the interior of the casing 3 is a spider 14. Horizontally disposed and slidably mounted in spider 14 is a punch 15 having its outer end pronged. This punch 15 also carries a coiled spring 16 which has one extremity bearing upon a stop 17 aliixed to the inner end of said punch, its other end bearing against the inner face of spider 14,

.said spring being adapted to return the punch to its normal inoperative position. An L-shaped bar 13 depending from the top of the casing 3 is formed with an opening in its free end which co-acts with the punch 15 to form an anvil therefor and at the same time limit the penetration of said punch. From the above it will be obvious that as the chart 10 rotates intermediate the pronged end of the punch 15 and anvil 1S, when said punch is actuated in a manner which will be heren inafter stated, its pronged end will pass through the chart and into the cooperating anvil.

In order that the marking pencil may be removed concomitant with the actuation of the punch, the spring 11 carrying said holder has its upper end in engagement with the vertical leg of an L-shaped follower 1%), the other vertical leg of which projects downwardly through the spider 14 to a point immediately to the rear of the punch 1&1. Of course, it will be understood that follower 19 is suitably supported by guiding eyes '20 so that it may be moved horizontally.

Immediately to the rea-r of casing 3 within the casing 1 hereinbefore referred to, there is mounted in a suitable casing 20 a solenoid 21 having the usual core 22. The forward portion of the core 22 is formed with a recess 23 which latter at its inner end com municates with a longitudinally extending channel 24, said channel registering with the opening 13 formed in the back of casing 3, with which it communicates. Slidably mounted within the recess 23 in the solenoid core, is a plunger 25 having on the inner end thereof an extension 26. This extension 26, when the plunger is in inoperative position, has its inner end lying approximately flush with the inner end of the solenoid, as will be apparent by referring to Fig. 1 of the drawings.

Extendinglongitudinally from the other or outer end of the plunger 25 is an extension 33, the free end of which is here shown operatively connected to the upper end of an arm 34 carried by the rotary air controlling valve 35 of the air brake system (not shown) of a train. Secured at one end to the casing of the valve 35 and wound around the stem of the same is a coil spring 36, the other end of which is secured to the arm 34, whereby said valve is normally maintained in its closed position, as will be readily understood.

Mounted on the rear end of the solenoid casing 20 is a spring actuated catch 37 which engages a shoulder 38 formed on the plunger extension 33 to retain said plunger, when once actuated, in its forward or projected position until released by a hand release 39. The shoulder 38 is positioned on the extension 33 at such a distance from the inner or free end of the other extension 26 so that when it is in tight contact with the hooked end of the catch 37 under the tension of the spring 36, the punch 15 under the tension of its spring 16 will be retracted. However, when in this locked position, the marker carried by the spring 11 will be still held out of engagen'ient with the chart 10.

To energize the solenoid 21 a battery 27 is provided having one terminal connected by a conductor 23 to one terminal of the solenoid, the remaining terminal of the latter being' connected b v a conductor 29 to one of a pair of contacts 36. the companion contact being connected by a conductor 29 to the positive pole of battery 27. These conductors may be brought into engagement by any suitable means, preferably by an arm 31 movable vertically and having au extension 32 which will, when the arm has been operated, contact with one of the resilient lingers 30 and canse the engagement of the same. This arm 31 may be controlled through the instrumentality of a track obstacle rotated at any predetermined point u along the right of way.

From the above it will be seen that when the arm 31 is moved downwardly, the circuit of battery 27 will be closed, solenoid 21 energized,.its plunger actuated, the punch caused to pierce the chronometer chart, and the marking device simultaneously removed therefrom.

As the device is designed primarily for use in connection with an` automatic train stopping mechanism, the solenoid will be energized only momentarily, that is, so long as tl e, arm 31 is passing over the track obstacle, the plunger will move a slight distance rearwardly into locking engagement with its catch, thereupon allowing the punch to be retracted, but preventing the marking device from yet engaging the chart. Thus the exact length of time the train was retained at any particular point when once stopped by the automatic stopping means, may be determined by the break in the line drawn by the marking device, as will be readily understood. Moreover, it will be noted that inasmuch as the marker is carried by a spring 11 and the latter afe fixed to the door 4f, any attempt on the part of the engineer to tamper with the contents of the casing will also be recorded.

Although in the foregoing we have described certain elements as best adapted to perform the functions allotted to them, nevertheless it is to be understood that various minor changes as to form, substance, etc., may be resorted to within the scope of the appended claims without departing from the spirit or sacrificing any of the principles of the invention.

Te claim as our invention 1. In a recording device of the character described, the combination with a chronometer chart, and means for rotating the same; of a marking device normally bearing on said chart, a punch for perforating said chart, means for simultaneously actuating said punch and removing said marking device from said chart, and means for locking the last referred to means in its operative position s o as to allow the punch to be retracted but preventing the marking device from engaging the chart.

2. In a recording device of the character described, the combination with a chronometer chart, and means for rotating the saine; of a marking device normally bearing on said chart, a punch for perforating said chart, a solenoid, a plunger controlled by said solenoid and coacting with said punch and said marking device for simultaneously perforating said chart and removing said marking device therefrom, and means for locking said plunger in its operative position so as to allow the punch to be retracted but preventing the marking device from engaging the chart.

3. In a device of the character described, the combination vwith a horizontally supported punch, means-for normally maintaining the same in inoperative position, a chronometer chart, its outer portion rotating to the front of said punch, and a marking device normally maintained in contact with the outer surface of said chart, of a solenoid, a plunger actuated thereby, the inner end of said plunger being disposed contiguous of said punch whereby when said plunger is actuated said punch will be caused to pierce said chart, means interposed in the path of said extension and operatively connected with said marking device whereby the latter will be actuated simultaneously with the perforation of said chart, and means for locking said plunger in operative position so as to allow the punch to be retracted but preventing the marking device from engaging said chart.

et. In a recording device of the character described the combination with a casing, the latter having an opening in the 'rear thereof, an inwardly projecting spider surrounding said opening, a punch carried by said spider, of a continuously rotating chart having its outer portion disposed to the front of said punch, and a marking device normally held in contact with said chronometer chart, of a solenoid disposed to the rear of said casing, a reciprocatory plunger carried by said solenoid and adapted to project through an opening in said casing whereby to contact with said punch, and a follower having one extremity disposed immediately to the rear of said punch, the other extremity in engagement with said marking device whereby actuation of the plunger will concomitantly perforate said chart and remove the marking device therefrom, and means for locking said plunger in operative position so as to allow the punch to be retracted but preventing the marking device from engaging said chart.

5. In a recording device of the character described the combination with a horizontally supported punch, means for normally maintaining the same inoperative, a chronometer chart having the upper portion thereof disposed to the front of said punch, a resilient holder, and a marking device carried thereby and normally held in engagement with said chart, of a solenoid, a plunger operable thereby and being disposed in the plane of said punch for cooperation with the latter, an L-shaped follower having one end in engagement with said holder, the other projecting in the path of said plunger, whereby said chart may be perforated and the marking device simultaneously removed therefrom on the actuation of said plunger, and means for locking said plunger in its operative position so as to allow the punch to be retracted but preventing the marking device from engaging said chart.

In testimony whereof we have hereunto set our hands in presence of two subscribing witnesses.

ARTHUR P. SANBORN. ROY C. WILSON.

VVitnesses':

H. P. HoR'roN, R. C. SANBORN.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. C. 

